Apparatus for laying concrete floors



Oct. 3, 1933. w 005 1,929,288

APPARATUS FOR LAYING CONCRETE FLOORS Filed Jan. 2, 1930' 4 Sheets-Sheet 2 INVENTOR Jignry W120 0.9 IW

7Z1'8ATTORNEY Oct. 3, 1933.

H. w. R005 APPARATUS FOR LAYING CONCRETE FLOORS Filed Jan. 2, 1930 4 Sheets-Sheet 3 INVENTOR erg .Roos BY I ll ISATTORNEY Oct. 3, 1933. H. w. R008 1,929,288

APPARATUS FOR LAYING CONCRETE FLOORS Filed Jan. 2. 1930 4Sheets-Sheet 4 INVENTOR his ATTORNEY Patented Oct. 3, 1933 APPARATUS FOR LAYING CONCRETE FLOORS Henry W. Roos, Cincinnati, Ohio Application January 2, 1930. Serial No. 417,855

3 Claims. (01. 25131.5)

This invention relates to apparatus for laying concrete floors, and particularly to forms for laying concrete floors at and adjacent the tops of the columns on which the floor is permanently supported.

The principal object of the invention is to provide a simple and eflicient construction which may be quickly assembled in place to prepare for pouring the concrete mixture.

Another object of the invention is to provide a construction of this kind which may be readily and quickly adjusted to provide for blocks or slabs of difierent thicknesses and also of different areas at the column head.

A still further object of the invention is to provide a form for concrete floors which may be quickly assembled from unit parts andwhich is adapted to be mounted on temporary supports as a unitand to fill in the space about the top of a permanent support or column which may be round or of other desirable shape.

Another object of the invention is to provide a form for laying concrete floors about the head of a column or other permanent support, which has two surfaces in different horizontal planes so that a thickerslab of concrete maybe produced over and about the head of the column.

To these and other ends, the invention consists 'in the construction and arrangement of parts that will appear from the followingdescription when read in conjunction with the accompanying drawings, the novel features being pointed out in the claims following the specification.

' In the drawings:

Figure 1 is a vertical section of assembled floor forms constructed according to one embodiment of the invention and showing a column'and temporary supports in elevation, the section being taken substantially on line 11 of Figure 3 looking in the direction of the arrows at said line;

Figure 2 is a section of the same taken substantially on the line 2-2 of Figure 1, looking in the direction of the arrows at said line;

Figure 3 is a fragmentary plan view of the same;

Figure 4 is a fragmentary plan View illustrating another way of carrying out the invention;

Figure 5 is a section taken substantially on line 5--5 of Figure 4 looking in the directionof the arrow at said line;

Figureifi is a section taken substantially on line 6-6 of Figure 4 looking in the direction of the arrow at said line;

.- umn head which is at a lower level than'that of Figure 8 is a perspective view ofthe same showing the separate parts from which the form is assembled in inverted position, and s Figures 9 and 10 are fragmentarysectional views showing how forms may be assembled to vary the thickness and area of the floor slab to be formed over and adjacent the column head.

Referring particularly to Figures 1 to 3 of the drawings, 1 represents a column or permanent support of steel, concrete or other suitable material enlarged at its upper end to form a head 2 on V which the floor is supported. It will, of course, be understood that in laying a floor of any size, any required number of columns may be employed for its support which may be round, as 7 shown, or of other preferred shape. The forms for the floor comprise a plurality of unit forms or pans 3 substantially square or rectangular in form, except that they may be cut away at their corners to fit around the square heads 4 of shores or temporary supports forminga part of the surface on which the concrete-is poured. The pans 3 are provided with downwardly projecting flanges 6 at their outer edges, to which corner brackets maybe secured which are adapted to so engage supports provided therefor on the shore heads. I s

It is desirable toform a thicker slab of concrete over and adjacent the column head than between the columns, the thickness of said slab depending on the load the floor is designed to. carry and the distance between adjacent columns. In order to maintain a level horizontal floor at the top of the concrete, it is necessary to arrange the forms for the thick slabs at a lower level than those for the thinner slabs. As shown in Figure '3 of, the drawings, the floor form is built up of standard forms 3 around the column head leaving a square or rectangular opening around the column head 2, which may be circular, as shown, or of any other preferred form, and

assembled in said openings are the forms 801 special construction adapted to connect'the free sides of the standard pans with the top of thecolthe standard forms assembled for the floor between columns.

Each of the forms 8 is substantially square in shape, except that one corner is cut away at 9 to form a curved or circular inner edge adapted to conform to the shape of the outer edge of the column head and fit closely about thesame.

The details of the construction of theseforms will be described in detail below. Each of these forms 8 is supported at its three outer corners on temporary supports or shores, having rectangular heads 10, the inner portions being supported adjacent the column head on similar shores.

Referring to Figures 1 and 2, it will be noted that the forms 8 are arranged at a lower level than the pans 3 forming a space 12 between them. Arranged in this space to form a filler is a block 13, which may rest on the forms 8 projecting beneath the forms 3 and supports the free sides of the forms 3 and serves to form the outer vertical wall of the thicker slab formed on the forms 8 and over the column head. It will be understood that four or more of the filler blocks 13'are employed, which may be constructed of wood or other suitable material, one being arranged on each side of the thick slab.

Attention is called to the fact that the above described arrangement may be employed as a simple and convenient way I of constructing a floor of different thicknesses where one portion of the floor is required to carry a heavier load than another portion. The forms for the thicker portion, which may comprise standard pens 3, are assembled at one level and the forms for the thinner portion at a higher level, the free edges of the latter being supported on filler blocks resting on the forms arranged at the lower level, the difference in thickness of the slabs being the thickness of the filler employed plus the width of the depending flanges on the pans. By varying the thickness of the filler blocks employed, the relative thickness of the slabs can be varied to meet ordinary requirements.

By reference to Figure 3, it will be noted that at the corners of the standard pans 3 adjacent their free edges and the special pans 8 arranged at the lower level, small openings will be left when the corners of the standard pans are cut out to fit around the shore heads. These openings are readily covered by means of pieces of sheet material 15 of suitable size supported on the pans 3 and arranged over the'openings.

In Figures 4. to 6 is shown another way of carrying out the invention. In this construction,

fiat upper surface 19 roughly rectangular or square in outline, having two long sides 20 which in the form of'construction shown in Figures 1 to 3 may equal the length of aside of one of the standard forms 3, or they may be made shorter when designed for use in other relations. Arranged substantially at right angles to the long sides are the short sides 21, the free ends of which are connected by a curved edge 22, which in the present embodiment is a quadrant of a circle adapted to fit around the top of the column head and engage one-fourth of the distance around the head so that four of the forms completely fill the space around it.

These forms or pans are provided with reinforcing means at their edges preferably constructed of sheet material and are L-shaped in cross-section to provide two flanges, one of which is arranged in the plane of the under surface Of to which it corresponds.

' distancethe end is inclined at an angle of sub-; stantially forty-five degrees to its longest outer the form to which it is secured by electric welding or other suitable means, and the other projects downwardly from the outer margin of the pan. One of these reinforcing members is shown at 23 extending along the straight edges of the form, and another, shown at 24, extends along the curved edge of the pan and has its horizontal flange cut at frequent intervals to 'permit of its being readily bent to the desired curve without breaking.

The flanges depending from the longer edges of the form may be perforated 'or provided with openings at frequent intervals whereby the pan may be directly connected by means of bolts with the marginal flanges of the standard forms 3, thus assembling the pans 8 in the same plane with the forms 3 and providing for a floor of uniform thickness throughout; or drop plates 25 may be bolted thereto to extend above its upper surface where they maybe bolted. to the flanges of the standard forms 3 or of the forms 16 adapted to be arranged in the same plane. It will be noted that the use of the drop plates 25 provides for assembling the forms 8 at a lower;, plane than the assembled forms 3 so that a thicker floor is formed thereon and over the top-of the column head. v

The drop plates 25 preferably have openings 26 for the bolts 27 arranged in several horizontal planes so that the forms 8 may be secured thereto in different planes, thus providing for assembling the forms 8 in planes spaced at different distances below the plane ofthe assembled forms 3 to provide for different thicknesses of floors at;.;; the column head, to meet different load conditions. The forms 8 maybe further reinforced by comprises a horizontal wall portion 30, the outer longer dimension of which is substantially equal in length to the siderof the form 3 to which it corresponds, and the opposite inner dimensionizo parallel thereto isof a length substantially equal to the length of the longer side of the forms 8 At' one end, the member 30 has a square portion cut from its outer corner to fit around the top ofthe shore head 19' and its other end is' arranged at right angles to its length for a short distance to fit against the head of the shore, and for theremainder of the side to fit" against a corresponding side of the adjacent form 16. Each of the forms 16 is provided with a depending marginal flange" 31 which serves to reinforce it at its edges and which also engages brackets on theshores 4 on'which the forms are-temporarily supported. If desired, the

form 16 may also be further reinforced at-frequent intervals throughout its length by means of L-shaped bars 32 arranged transversely thereof on its under side; The marginal flange 31 and r the reinforcing bars 32 may be secured to the forms by electric welding or other suitable means. By'thus assembling the parts shown in Figure 8, a unit form such as shown in Figure 'Zis produced,

four of-which maybe assembled-aroundthe mounted directly on the forms 8 and in the same plane, and the drop plates 25 could be mounted on the outer flange of the unit and secured to the free edges of the forms 3, as shown in Figure 1 9. Two forms 16 varying slightly in length could be assembled on the forms 8 with the shorter side of one arranged against the longer side of the other, and in Figure 10 is shown an assembly in which the drop plate 25 connects two narrow forms, one 16' in the plane of the forms 8 and bolted thereto, and the other 34 'in the plane of the forms 3 to which it is bolted.

The drop plates 25 may also be employed to afford a simple and convenient means for laying a thicker slab of concrete on one portion of a floor than on another. This could be readily accomplished by assembling standard forms 3 for one part of the floor at a higher plane than for the other part and connecting their free edges with the drop plates 25.

It will be understood that the pans 8 and 16 could be constructed of different sizes and assembled in different arrangements to meet varying conditions. The pans 8 could also be made of different shapes to fit column heads of different.

shapes.

While the invention has been described with reference to certain details of construction, it is not limited thereto, and this application is intended to cover such changes as may come within the spirit of the invention or scope of the following claims. a

I claim:

1. An apparatus for laying concrete floors on permanent supports comprising a plurality of substantially rectangular forms of sheet material adapted to be assembled directly on shores to form a mold for a concrete floor in a plane above the top of a column and leaving an opening over and adjacent the top of said column, and a plurality of forms of sheet material adapted to be mounted directly on shores and separately assembled in said opening in the horizontal plane at the top of the column and continue the floor mold to and around the top of the column.

2. An apparatus for laying concrete floors on permanent columns comprising a plurality of substantially rectangular forms of sheet material adapted to be assembled directly on shores to form a mold for a floor in a plane above the tops of said columns and leave a substantially rectangular opening over and adjacent said columns, four forms of sheet material adapted to be separately assembled in said opening directly on shores to form a mold in a plane at the top of said columns and below the plane of said first mentioned mold, each of said four forms having two long edges arranged at substantially right angles to each other to conform to the corner of said opening and curved inner edges to conform tothe shape of the top of the column, and vertically arrangedplates secured to and connecting the forms in the difierent horizontal planes for molding the side walls of a thick slab of concrete formed on said column and four forms.

3. A form for laying concrete floors on permanent supports, comprising a body portion of sheet material adapted to be mounted directly on-shores in a substantially horizontal position in the plane of the top of the permanent support and having two long sides and two shorter sides arranged at substantially right angles to the long sides and a side formed to fit the top of the permanent support, a flange depending from each of said long sides, wall forming members detachably secured to said flanges and, projecting above said body portion to form a side wall on the thick slab' to be molded on the permanent support, and elongated forms on said wall forming members detachably secured thereto, each of said elongated forms having means whereby it may be detachably mounted on shores with which they cooperate to form a floor mold.

'HENRY W. R008. 

